1# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
2
3# Copyright 2017-2021 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
4#
5# This file is part of qutebrowser.
6#
7# qutebrowser is free software: you can redistribute it and/or modify
8# it under the terms of the GNU General Public License as published by
9# the Free Software Foundation, either version 3 of the License, or
10# (at your option) any later version.
11#
12# qutebrowser is distributed in the hope that it will be useful,
13# but WITHOUT ANY WARRANTY; without even the implied warranty of
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15# GNU General Public License for more details.
16#
17# You should have received a copy of the GNU General Public License
18# along with qutebrowser.  If not, see <https://www.gnu.org/licenses/>.
19
20"""Test Backforward widget."""
21
22import pytest
23
24from qutebrowser.mainwindow.statusbar import backforward
25
26
27@pytest.fixture
28def backforward_widget(qtbot):
29    widget = backforward.Backforward()
30    qtbot.add_widget(widget)
31    return widget
32
33
34@pytest.mark.parametrize('can_go_back, can_go_forward, expected_text', [
35    (False, False, ''),
36    (True, False, '[<]'),
37    (False, True, '[>]'),
38    (True, True, '[<>]'),
39])
40def test_backforward_widget(backforward_widget, tabbed_browser_stubs,
41                            fake_web_tab, can_go_back, can_go_forward,
42                            expected_text):
43    """Ensure the Backforward widget shows the correct text."""
44    tab = fake_web_tab(can_go_back=can_go_back, can_go_forward=can_go_forward)
45    tabbed_browser = tabbed_browser_stubs[0]
46    tabbed_browser.widget.current_index = 1
47    tabbed_browser.widget.tabs = [tab]
48    backforward_widget.enabled = True
49    backforward_widget.on_tab_cur_url_changed(tabbed_browser)
50    assert backforward_widget.text() == expected_text
51    assert backforward_widget.isVisible() == bool(expected_text)
52
53    # Check that the widget stays hidden if not in the statusbar
54    backforward_widget.enabled = False
55    backforward_widget.hide()
56    backforward_widget.on_tab_cur_url_changed(tabbed_browser)
57    assert backforward_widget.isHidden()
58
59    # Check that the widget gets reset if empty.
60    if can_go_back and can_go_forward:
61        tab = fake_web_tab(can_go_back=False, can_go_forward=False)
62        tabbed_browser.widget.tabs = [tab]
63        backforward_widget.enabled = True
64        backforward_widget.on_tab_cur_url_changed(tabbed_browser)
65        assert backforward_widget.text() == ''
66        assert not backforward_widget.isVisible()
67
68
69def test_none_tab(backforward_widget, tabbed_browser_stubs, fake_web_tab):
70    """Make sure nothing crashes when passing None as tab."""
71    tab = fake_web_tab(can_go_back=True, can_go_forward=True)
72    tabbed_browser = tabbed_browser_stubs[0]
73    tabbed_browser.widget.current_index = 1
74    tabbed_browser.widget.tabs = [tab]
75    backforward_widget.enabled = True
76    backforward_widget.on_tab_cur_url_changed(tabbed_browser)
77
78    assert backforward_widget.text() == '[<>]'
79    assert backforward_widget.isVisible()
80
81    tabbed_browser.widget.current_index = -1
82    backforward_widget.on_tab_cur_url_changed(tabbed_browser)
83
84    assert backforward_widget.text() == ''
85    assert not backforward_widget.isVisible()
86